/**
 * Pure rendering functions for annotations.
 * Each function takes a canvas 2D context, canvas dimensions, and an annotation.
 * Coordinates are normalized (0..1) and scaled to canvas pixels.
 */
import type { Annotation, BrushAnnotation, ArrowAnnotation, TextAnnotation } from './annotation-types.js';
/**
 * Render a brush stroke annotation.
 */
export declare function renderBrush(ctx: CanvasRenderingContext2D, width: number, height: number, annotation: BrushAnnotation): void;
/**
 * Render an arrow annotation with a triangular arrowhead.
 */
export declare function renderArrow(ctx: CanvasRenderingContext2D, width: number, height: number, annotation: ArrowAnnotation): void;
/**
 * Render a text annotation with a subtle shadow for readability.
 */
export declare function renderText(ctx: CanvasRenderingContext2D, width: number, height: number, annotation: TextAnnotation): void;
/**
 * Render all annotations onto a canvas context.
 */
export declare function renderAll(ctx: CanvasRenderingContext2D, width: number, height: number, annotations: readonly Annotation[]): void;
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